See full version: How Accurate Is an iPhone GPS
It is critical that your iPhone is set to the correct date and time if you want accurate and quick GPS readings. When the time and date are set correctly, the GPS in the iPhone predicts where the satellite signal originates. This allows it to lock on to more satellites and to find those signals more quickly. Accuracy to within 10 meters can be expected as long as the phone locks on to at least three satellites. [links]
The longer you keep an application that uses the GPS feature open on an iPhone, the more your accuracy increases. The more satellite signals the iPhone locks onto, the more accurate the results are. When using the location services on the phone, the GPS continually tries to pick up additional signals. If it succeeds, the accuracy of the results improves as a result. more
The GPS on an iPhone is an assisted GPS system; it uses other reference sources in addition to the signal generated by the Global Positioning System satellites to pinpoint the exact location of the device. The more signal sources the iPhone can access for this purpose, the more accurate it becomes. In optimal conditions, the iPhone GPS is accurate to within a few meters. more
The iPhone locks onto a location more quickly and with more accuracy if you allow it to connect to as many signal sources as possible. Enable both cellular service and Wi-Fi on the phone and connect to a Wi-Fi signal if the phone does not do so automatically to increase the accuracy of the iPhone's position.
Beginning with the iPhone 4S, Apple also uses Russia's GLONASS system to improve the accuracy and response time of the phone's location services. The Global Navigation Satellite System is by itself not as precise as GPS, but by using GLONASS signals alongside the other signal sources, the iPhone becomes more accurate. This service allows the iPhone to be accurate within 10 meters even in areas where GPS coverage is not strong, because these areas are sometimes better reached by the GLONASS system. here
Another way to prevent getting this page in the future is to use Privacy Pass. You may need to download version 2.0 now from the Chrome Web Store. [links]
If you are on a personal connection, like at home, you can run an anti-virus scan on your device to make sure it is not infected with malware. more
Completing the CAPTCHA proves you are a human and gives you temporary access to the web property. more
If you are at an office or shared network, you can ask the network administrator to run a scan across the network looking for misconfigured or infected devices.
Cloudflare Ray ID: 687e53499a675363 • Your IP : 46.32.66.208 • Performance & security by Cloudflare here
If the error does not disappear, however, you will need to restart the app. If it still persists, log out of your account, close the application from the recent apps menu, wait a couple of seconds and re-open it. Once you log back in, the problem should be gone. Restarting your phone is always something you should try as well. Finally, you should also make sure you have the latest version of Pokemon GO or Ingress by checking the apps on the Play Store.
If your Android device does not come with a compass app, you can download one from the Play Store and do it this way. Compass Galaxy is a good and reliable option. more
The GPS sensor on your smartphone is essential for the use of navigational apps and services, such as Google Maps. However, sometimes your GPS signal can go wonky. There are ways to fix and improve location accuracy. We'll show you how!
The apps that most often utilize your GPS besides Google Maps are AR-location based games like Pokemon GO and Ingress. However, the dreaded 'GPS signal not found' error is quite common. How can you fix it? First, make sure your location is enabled and then turn on high accuracy, as described in the steps above. You should now be able to go on the hunt for more Pikachus.
One of the main problems that we encountered when going from one app to another is that the GPS is turned off to save battery. If for example you are playing Pokémon Go and want to take a look at your latest messages, your GPS could be turned off. here
On some smartphones, you will also find additional options under Scanning in the location settings page. You can enable Wi-Fi scanning and/or Bluetooth scanning. The first will improve accuracy even further by allowing apps and services to detect Wi-Fi networks at any time. The same applies for Bluetooth scanning, which will detect Bluetooth devices nearby. more
When the vehicle is in operation, the rotary motion of the output shaft is carried over to the central mandrel of the drive cable. The drive cable therefore starts rotating at the same speed as the output shaft, which rotates at the same speed as the wheels of the vehicle. The other end of the drive cable connects to a magnet, which sits inside the speed cup. The magnet does not actually touch the interior of the speed cup, as a certain air gap is maintained between the two.
To understand why a speedometer provides slightly inaccurate readings, we first need to understand how speedometers and GPS devices measure speed. The speedometer on your vehicle can be either an electronic one or a mechanical one. Mechanical speedometers have been around since the 1900s, whereas the automotive world didn’t see the first all-electronic speedometer until the late 1980s. Most modern vehicles use an electronic speedometer to gauge and display the speed of the vehicle.
Mechanical speedometers are simple in construction and consist of the following parts: drive cable, magnets, speed cup, a hairspring, and the terminal pointer needle on the dashboard. The drive cable is a flexible cable (a collection of small helical coil springs tightly wound around a central wire or mandrel) attached to the transmission of the vehicle. To be more precise, the drive cable is connected via a small pinion gear to the gear wheel on the output shaft of the transmission. The output shaft is connected to the wheels of the vehicle and imparts its rotational speed to them. Thus, connecting the drive cable of the speedometer to the output shaft provides a relatively accurate assessment of the vehicle’s speed.
The faster the output shaft rotates, the greater the strength of the magnetic field, forcing the speed cup and the pointer needle to move farther along the speed dial. The hairspring is present to resist the torque on the speed cup and to hold the pointer at zero when the vehicle isn’t operating. The pointer needle stops turning when the opposing torque of the hairspring equals the torque due to eddy currents; and points towards a correct value of speed on the dial.